20061080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{223}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 49109760

約数和(自身を除く): 29048680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 173, 223, 260, 346, 446, 520, 692, 865, 892, 1115, 1384, 1730, 1784, 2230, 2249, 2899, 3460, 4460, 4498, 5798, 6920, 8920, 8996, 11245, 11596, 14495, 17992, 22490, 23192, 28990, 38579, 44980, 57980, 77158, 89960, 115960, 154316, 192895, 308632, 385790, 501527, 771580, 1003054, 1543160, 2006108, 2507635, 4012216, 5015270, 10030540, 20061080]

約数ペア:

[(1, 20061080), (2, 10030540), (4, 5015270), (5, 4012216), (8, 2507635), (10, 2006108), (13, 1543160), (20, 1003054), (26, 771580), (40, 501527), (52, 385790), (65, 308632), (104, 192895), (130, 154316), (173, 115960), (223, 89960), (260, 77158), (346, 57980), (446, 44980), (520, 38579), (692, 28990), (865, 23192), (892, 22490), (1115, 17992), (1384, 14495), (1730, 11596), (1784, 11245), (2230, 8996), (2249, 8920), (2899, 6920), (3460, 5798), (4460, 4498)]